Starting from the upcoming year, golf course reading materials, known as yardage books, at PGA Tour will no longer contain exhaustive details and specific slope measurements at each point on the green - information that was once a valuable guide for players.
Instead, during official rounds, golfers and caddies are allowed to use an approved yardage book, providing general information about the contours of the putting area and a few other factors.
They can also make additional notes, but this data must be gathered solely through observation and practical experience, including televised programs, without the aid of technological devices or copying from other sources. Notes conforming to the standards from previous yardage books will also be accepted, while the use of books from 2021 and earlier will be considered a violation.

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The draft of the local rule was sent to member golfers by the organizing committee on November 1 and was discussed in a meeting of the PGA Tour policy board a week later, with plans for implementation starting January 1, 2022.
The new regulation aims to bring players and caddies back to relying on skills, feel, judgment, along with information based on experience, preparation, and training to navigate and read the green's line, as stated in the memorandum.
Thao Pham
Posted by: Nguyen Dinh Thai
Keywords: Changes Coming to PGA Tour's Yardage Books